Solar battery characteristics

by:Power Kingdom     2021-04-26
Solar batteries are the application of ‘batteries’ in solar photovoltaic power generation. Currently, there are four types of lead-acid maintenance-free batteries, ordinary lead-acid batteries, gel batteries and alkaline nickel-cadmium batteries. The solar batteries that are currently widely used in China are mainly: lead-acid maintenance-free batteries and gel batteries. These two types of batteries are very suitable for reliable performance because of their inherent 'free' maintenance characteristics and the characteristics of less pollution to the environment. Solar power systems, especially unattended workstations.    The solar battery should have the following characteristics:     1, a relatively good deep cycle capability, and a good overcharge and overdischarge capability.    2Long life, special process design and long life battery guaranteed by gel electrolyte.    3 Suitable for different environmental requirements, such as high altitude, high temperature, low temperature and other conditions that can be used normally under different conditions. The working principle of the solar battery during the daytime sunlight shines on the solar module, so that the solar module generates a certain range of DC voltage, converts the light energy into electric energy, and then transmits it to the intelligent controller. After the overcharge protection of the intelligent controller, the solar energy is protected. The electrical energy transmitted by the components is sent to the storage battery for storage; and storage requires a storage battery. The so-called storage battery is an electrochemical device that stores chemical energy and releases electrical energy when necessary. The main components of lead-acid batteries are as follows:      anode plate (lead peroxide.PbO2) ---> active material cathode plate (sponge lead. Pb) ---> active material electrolyte (dilute sulfuric acid) ---> sulfuric acid ( H2SO4)+water (H2O)     battery shell isolation plate and other (liquid plug, cover, etc.)      use and maintenance of solar battery (1) The suitable working temperature is 15~20℃     (2) The method of connecting the solar battery is: connect the solar battery The positive electrode is connected to the positive electrode, and the negative electrode is connected to the negative electrode. In this way, the power of the solar battery will be doubled, and the voltage is the same as the voltage of a solar battery. The two poles of the solar battery must not be short-circuited (to meet each other).     (3) For the solar battery that is newly installed or recharged for the first time, a longer period of time shall be performed, which is the initial charge, and shall be charged according to the current of 1/10 of the rated capacity. Before installation, you must measure whether the battery is sufficient. If the power is insufficient, please charge the battery for more than 8-16 hours in a sunny place or use AC power to fully charge the battery first. Overdischarge charging should be strictly avoided. When charging normally with alternating current, it is best to use the hierarchical charging method, that is, use a larger current constant current equalizing charge at the initial stage of charging, and then switch to the conventional constant voltage floating charging method after charging to the equalizing voltage and constant voltage for a certain period of time.     (4) Keep the battery clean. The installed solar battery pole should be coated with petroleum jelly to prevent corrosion of the pole.    (5) is equipped with online monitoring and management technology for solar storage batteries, which conducts online measurement and analysis of internal resistance of solar storage batteries, detects battery defects in time, and performs maintenance in time.     (6) Prevent the solar battery from freezing and cracking in winter, avoid direct sunlight in summer, and place the solar battery in a cool, ventilated place.
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